Each DAV model is structurally reinforced for intensive use, and includes a patented disc protector, a device that helps prevent the brush cutting blades from hitting rocks or other hard objects on the ground.

DAV Technical Advantages

Low operating cost

The vertical shaft brush-cutter disc technology used by DENIS CIMAF is not a complicated system. A motor, with its vertically positioned axis, drives a disc with its two attached free swinging blades. Seals are used to reduce oil leakage, joints to reduce mechanical shock, and bearings to ease shaft rotation. With its limited number of simple parts, this technology is generally less costly than horizontal axis DAH and DAF technologies, although the latter offer greater efficiency and productivity.

Light Weight

With its limited number of components and minimal size, DAV models are lighter than the DAH models. Where the smallest DAH model normally requires at least a 7 to 8 tonne excavator, the smallest DAV model functions on an excavator half the size.

Vertical-Shaft Brushcutting Disc Technology

DAVbrush-cutters and DTNbrushcutter-mowers use vertical-shaft disc technology, which thanks to its relatively simple design and limited number of parts, delivers many technical benefits including:

Lower acquisition and operating costs compared to products using the horizontal-shaft rotor technology;

Lower weight units;

Straightforward maintenance and repair procedures, owing to smaller number of parts.

Vertical-shaft discs are however more limited in terms of the types of operations in which they may be used. Attachments with this technology do not chip vegetation during brush-cutting operations. They simply cut it, leaving larger pieces of wood on the ground. Projects that require a nicer finish will thus take longer to complete. When used on excavators, debris is deflected sideways but cannot be entirely eliminated, and can in fact be deflected at great speed over long distances. It is not therefore recommended using these units near roads or inhabited areas.

When used under appropriate conditions, products using this technology are incredibly robust and easy to manoeuvre. They are worthwhile alternatives when acquisition and operating costs are major constraints.

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